liftedlogic

Keep track of where all of your conversions are coming from easily.
Select what kind of sources you care about from the Gravity Forms settings.

Source Input for Gravity Forms

Add a new input type to Gravity Forms that tracks the source of the conversion.

Kyle Maurer

Want to dynamically insert keywords and phrases into your copy? This plugin comes bundled with several cool shortcodes that allow you to do just that.
To get value from this plugin you should be building URLs <a href="https://wordpress.org/plugins/google-url-creator/" rel="ugc">using this plugin</a> and then sending traffic from various web sources to the new URLs.

Google Campaign Text Replacer

Want to dynamically insert keywords and phrases into your copy? This plugin comes bundled with several cool shortcodes that allow you to do just that.

Source Input for Gravity Forms vs Google Campaign Text Replacer